Flat PVC heat-shrinkable tube and manufacturing method thereof
A heat-shrinkable tube and flat technology, applied in the field of PVC heat-shrinkable tube and its manufacturing, can solve the problems of difficult manufacturing process, tube wall thickness, complex formula, etc., achieve good longitudinal and transverse shrinkage rates, and smooth tube wall surface , the effect of uniform wall thickness
Active Publication Date: 2021-10-22
深圳弘臻新材料科技有限公司
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- Description
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Problems solved by technology
[0004] In order to obtain a flat PVC heat-shrinkable tube with high smoothness, good thermal shrinkage performance and thin tube wall, the formula is complicated, the manufacturing process is difficult, and there are many assembly line equipment processes.
As a result, the production equipment and production processes used by various manufacturers are not the same. Due to the different formulas, processes and equipment, the performance of the products produced is different. Generally speaking, the flat PVC heat shrinkable products currently on the market The tube wall is thick and uneven, making it have low longitudinal shrinkage and transverse shrinkage, causing cracks or wrinkles when the user uses it for the outer packaging of the applied product
Method used
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Embodiment Construction
[0053] First, flat PVC heat shrinkable tube
[0054] The flat PVC heat shrinkable tube of the present invention is made of a blown film production process having a thickness of 30 microns -40 microns. After folding (so that the circular tube is flat) has a width of 110 mm, the use of the prior art Flat PVC heat shrinkable tubes produced by the blown film process are typically less than 90 mm.
[0055] The thinner the thickness of the heat shrink tube, the higher the grade, the thinner, the thinner, the better the heat pipe, and the thinner, the thinner.
[0056] The longitudinal shrinkage ratio of the flat heat shrink tube 9 is 10% to 30%; the lateral shrinkage ratio is 45% -55%. The longitudinal contraction ratio refers to a hot water that is immersed in a finished flat PVC heat pipe to 95 ° C or more, and its longitudinal length is compared to the length of the pre-immersion of the hot water; the lateral shrinkage ratio refers to the finished product After the flat PVC heat shri...
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Abstract
A flat PVC heat-shrinkable tube with uniform tube wall thickness, good shrinkage performance and large width after being folded in half and a manufacturing method thereof. The raw material of the flat PVC heat-shrinkable tube is composed of polyvinyl chloride, processing aid, reinforcing agent, Clariant wax powder, dispersant, talcum powder, internal lubricant, heat stabilizer and plasticizer. The wall thickness of the heat-shrinkable tube is 30-40 microns, the width of the heat-shrinkable tube is 13.5mm-110mm after being folded in half, and the longitudinal and transverse shrinkage rates are 10%-30% and 45%-55%, respectively. Its production equipment adopts flat-blowing flow production line equipment. It improves multiple links in the production line of PVC heat-shrinkable tubes, so that the wall thickness of PVC heat-shrinkable tubes using this line of production equipment is uniform, and the longitudinal and transverse shrinkage rates are better. The heat-shrinkable tubes are folded in half and flattened into a flat shape The width of the heat-shrinkable tube is relatively large, and the wall surface of the heat-shrinkable tube is flat, smooth and bright, and free of blemishes.
Description
Technical field [0001] The present invention relates to a PVC heat shrink tube and a method of manufacturing the same, and more particularly to a flat PVC heat shrink tube of ultra-thin large diameter and a method of manufacturing the same. Background technique [0002] Flat PVC heat shrink tube is convenient to transport, reducing transportation costs, reducing transportation costs on packaging, reducing transportation costs, and it is also compressed in the pipe, which is easy to cut, and improve the quality of the pipe. [0003] When the flat PVC heat shrink tube is in the application, it has a special function that needs to be protected, which has a special function of heat shrinkage, heating 98 ° C or higher, which can be contracted, easy to use. It is used to electrolytic capacitors, inductors, battery monomers, and battery packs, and high temperature resistance is good, no secondary shrinkage. [0004] In order to obtain a high degree of finish, the heat shrinkage performa...
Claims
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IPC IPC(8): C08L27/06C08L23/30C08L51/04C08K13/02C08K3/34C08K5/58C08K5/12B29C61/02
CPCB29C61/025C08L27/06C08L2203/18C08L23/30C08L51/04C08K13/02C08K3/34C08K5/58C08K5/12
Inventor 卢旭波姚雄秋邢道辉袁炼城林晓丹
Owner 深圳弘臻新材料科技有限公司