What should be paid attention to when customizing the production of plastic hollow boards?

<> plastic hollow board standard is related to the quality of the product, and there are many requirements for the detection and packaging of the hollow board, so as to ensure the integrity of the product, the specific specifications are as follows:

First, the quality requirements.

1. The distance between the vertical bars of the hollow plate should be even, and there should be no significant skew.

2. Cold radius requirements: the minimum cooling radius of the hollow plate is 175 times of the plate thickness, and there shall be no cracks on the plate surface after the minimum bending radius is bent.

3. Appearance quality requirements: smooth and flat appearance, no bubbles, cracks and significant marks, no deformation, depression and color difference and other shortcomings that affect the application.

4. The scale error is about 5 cm.

2. Testing methods:

1. Component experiment.

Take a hollow board of not less than 1 square meter for measurement, and calculate the component of the unit area, 2, scale measurement.

The plate is measured along the direction of the vertical reinforcement with an accuracy of 1mm, and the measuring part is taken from any three places within 100mm from the two ends, and the plate width is measured with the vertical vertical reinforcement direction of the measuring tool with an accuracy of 1mm, and the measuring part is taken from any three places within 100mm from the two ends.

3. Appearance inspection.

The inspection of appearance quality is in the room with enough natural light, 300-400mm away from the product, and the visual inspection is used.

4. Cold bending function test.

Under the ambient temperature, the hollow plate with a width of 2m and a length of 2m shall be cold-bent along the direction of the rib on the measuring tool with a radius of 175 times the plate thickness, and the hollow plate shall not have cracks.

3. Precautions for packaging:

1. Delivery. The hollow board should be maintained clean during transportation, and should not be touched with corrosive media, and handled carefully when transferring to ensure that the product is intact.

2. Packaging The appearance of the hollow board should have a layer of maintenance film, and add the outer packaging, and the product name and the name of the manufacturer should also be indicated on the outer packaging"Sunscreen, rain and impact protection"and other signs, 3, transportation.

The hollow board should be affixed or printed with the logo of the product in a conspicuous part, including the name and trademark of the manufacturer, the product name, the product specification model and specification number, the anti-ultraviolet appearance mark, the date or number of the factory.

4. Storage. The hollow board should be stored in a ventilated and dry room, stacked flat, and during storage, it is forbidden to put it together with corrosive media and away from heat sources.

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Quoted from Huiyuan Plastics.

At present, the hollow board has good processing performance, so it can produce a variety of different specifications and sizes, and the hollow board must first consider the use when customizing the size, and the specifications and sizes must meet the needs of use. Secondly, it is necessary to consider whether the fluidity of the plastic material used can meet the practical performance, and when using the plastic material with poor fluidity, the wall thickness of the hollow board should not be too small, and the size should not be too large. Finally, consider the molding capacity of the production equipment, such as extrusion volume, injection volume, template size, etc., to see if it can meet the customization needs.

The size of the wall thickness of the plastic hollow board is mainly determined by the structure, strength, quality, molding and other factors of the product, the size and uniformity of the wall thickness will directly affect the strength and durability of the hollow board, in order to avoid or reduce the occurrence of this undesirable phenomenon, the wall thickness of each part of the plastic parts can not be too different, generally 20 of the average wall thickness.

If the wall thickness of the plastic hollow board is uneven, it will affect the actual performance, for example, at the junction of thickness and thinness, the shrinkage force will be inconsistent due to the different cooling rates, and the wall thickness is prone to cracks and other defects at the sharp change, so in the design process of the plastic hollow board, the size and shape of the hollow plate are usually basically determined according to one or several structural characteristics of the product, and then the accurate wall thickness size will be obtained according to other conditions.

When using the device that should be paid attention to first of the plastic hollow board, the construction organizer must understand the text and precautions printed on the maintenance film, and explain it to the operator, especially pay attention to the specifications of which side is facing outward. Before the device, do not remove the maintenance film, only along the edge of the plate to lift the maintenance film about 50mm, after the end of the device immediately remove the maintenance film, if it is necessary to continue to maintain the board surface, then remove the film first, and then cover the maintenance film from the beginning. The adhesive substance of the sealing material should not be harmful to the PC solar panel.

Sealing tapes should have excellent weather resistance and should not lose their stickiness and mechanical strength over a long period of time. Do not polish or clean the sun board with strong alkali, and do not wipe the appearance with a hard brush to avoid the appearance of hair pulling.

The second is the storage and transportation of plastic hollow boards: they should be stored indoors, and they do not promise direct sunlight or rain; Stack by hand, and do not stack more than two meters high. No heavy objects shall be pressed on the board, and there shall be no hard objects between the plates.

The storage room should be kept clean, dry and protected from dust ingress. Other chemicals should not be stored indoors. When storing, do not damage or remove the maintenance film.

When transporting, it is necessary to lay flat on a clean flat tray with an area larger than the plate, and if necessary, it should be properly tied to prevent sensation and sliding, and pay attention to maintaining the edge of the board so that it is not damaged and the double-sided maintenance film remains intact. The ultimate is the cleaning of plastic hollow panels: it is necessary to rinse with warm water below 60 °C when cleaning.

When cleaning, apply neutral detergents, and do not apply detergents that have an aggressive effect on the sun panel. Ask to wipe quietly with a soft cloth or sponge dipped in neutral liquid. Do not clean with coarse cloths, brushes, mops and other sturdy and sharp objects.

The unsuitable cleaning agent is an alkaline solution, which will attack the surface of the board. Esters, ketones, halogenated hydrocarbons and all substances that can dissolve or swell polycarbonate are prohibited.

Dry plastic hollow boards, that is, no sealant is used. The advantage of the dry assembly system is that the sealant strip is pressed into the inner part of the strip, so that the panel can move freely when the expansion and load position is moved. This assembly system is mainly used in small facilities such as garages, station canopies, eaves, greenhouses and many other places where glass is replaced.

When wet assembly is used, the basic requirement is that the sealing system can withstand a certain amount of movement of the panel, allowing thermal expansion without reducing its adhesion to the frame and panel. It is generally recommended to use neutral silicone glue and plastic hollow board for wet assembly, but special attention should be paid to the chemical properties of the sealant used before use, and acidic and alkaline silicone glue must not be selected, because these curing agents will cause the board to crack, especially when there is internal stress, in the selection of sealant, in addition to considering the chemical adaptability, it is necessary to focus on inspection, elongation and weather resistance.

The first method, pinching: the hardness of the board with poor quality is also relatively poor, and the phenomenon of denting will appear when the edge is lightly pinched by hand, and some can not even return to the position after the depression, and the plate can be torn by tearing it by hand. The second method, look:

Look at the gloss of the surface of the plate, as well as the color of the cross-section. The best plastic hollow board is made of new materials, with good color gloss; The black hollow board material will have the characteristics of smooth and shiny surface; The color and transparent board will have uniform gloss, no pittings, spots, moths, decay, and even transparent or translucent, which has a better appearance. Third Method:

Test: You can weigh the weight of the hollow board, and the weight of each square is the gram weight of each square plate; You can also do a water coating test, after applying water, observe whether the plastic hollow board has blue, through the bottom and other phenomena, if there are the above problems, the epidermis is usually thinner; The anti-static hollow board can be verified by an electrostatic tester.

P hollow board, also known as plastic hollow board, vantone board, corrugated board, is currently widely used in the field of packaging materials by hollow board factory: it can be made into hollow board cartons, plates, anti-static hollow boards, hollow board backing plates, hollow board storage cages, hollow board advertising boards, hollow board turnover vehicles; According to the color and use, it can be divided into: electrostatic hollow board turnover box, anti-static hollow board turnover box, calcium-plastic hollow board turnover box, blue hollow board turnover box, red hollow board turnover box, white hollow board turnover box, corrugated hollow board turnover box, special hollow board turnover box, gray hollow board turnover box, folding hollow board turnover box, yellow hollow board turnover box PP hollow board is PP plastic polypropylene through 200 degrees of high temperature production of key leakage old deep processing board products.

Compared with ordinary plates, hollow plates have better bending and wear-resistant functions. There are two main varieties: anti-static hollow board and ordinary hollow board. Because the hollow board has the function of easy bending, light weight and wear resistance, it has been widely used in industrial product packaging, electronic component packaging, plastic turnover boxes, box partition knife cards, anti-static hollow plate knife card boxes, PE bottle glass bottle backing plate trays, refrigerator back plates, refrigerator side panels, advertising boards, display racks, fruit boxes, stroller pads and other fields.

The use of hollow boards, especially white hollow boards, in the construction field is growing rapidly year by year. When purchasing PP hollow board, we should pay attention to the following aspects: look at the mark and check the certificate PP hollow board refers to the monolithic board that constitutes the hollow board, which is a safety board that has passed SGS environmental protection certification.

In 2006, the construction (safety) hollow board was included in the compulsory certification products of the safety board category. According to the enterprise information, factory number or product certification certificate, etc., check whether the manufacturer of the product has passed the SGS environmental protection certification (there is a 3C certificate and is valid), whether the model specifications of the product are within the scope of the company's compulsory certification, and whether the certification certificate status is valid. Look at the appearance to check the quality of the product, the hollow board should not hinder bending and brittleness, and the board surface should be smooth.

There are few sand spots and pitts on the surface.

If there are black dots and crystal points on the hollow board, it is marked that it is rich in impurities, mainly to see whether there are impurities in the hollow board. The higher the impurity content, the more the indicated content of the old material. A good plastic hollow board must be clean and translucent.

By investigating the fluidity of the molten fluid of the hollow plate, the quality of the material can also be determined. Because the molecular chain of carbonate resin is long, and repeated high-temperature melting will damage its molecular structure, and the large molecule will be reduced to a small molecule. The old material is melted at high temperature de novo, and its molecular chains will crack, and then the fluidity will be added.

Therefore, theoretically, the better the fluidity of the data in the molten state, the worse its quality. Although this method is theoretically simple to understand, it is still difficult to operate. Users who do not have the conditions for testing can send the hollow board materials to a professional organization for inspection.

Nowadays, more and more producers are opting for co-extruded UV layer (UV layer blue tenant) hollow boards. Nowadays, many manufacturers advertise their own products, and the UV layer and anti-fog droplet layer can self-identify ultraviolet rays, which is a key factor in the aging of the plate. However, whether the UV layer can really carry forward the role of consumers cannot be investigated.

The UV layer of a good plastic hollow board can not only be measured by the thickness, but also depends on the uniform level of its co-extrusion. For the market type, there are some bases on the width, without adding any UV data, but pretending to be the appearance of co-extruded UV layer hollow board. The thick and straight vertical ribs are good quality plastic hollow boards, and the vertical ribs are thin, and those that will twist and turn when pressed indicate that the board is of poor quality.