Making process of heat seal type heat-shrinking sleeve

Abstract

The invention relates to a making process of a heat seal type heat-shrinking sleeve. The making process comprises the following steps: 1, with a plastic base material and melting glue, making a semi-finished product with a base material layer and a melting glue layer, which are compounded together, and preparing heat-shrinking belt finished products of different widths and different lengths according to the diameter requirement; 2, incising a heat-shrinking base material, stripping the base material layer and the melting glue layer which are compounded into the dual-layer heat-shrinking belt; 3, performing electric heat seal on the base material / two ends of the base material on equipment; 4, performing pressing cooling on the heat-sealed base material part to ensure that the base material part meets the requirement on the temperature suitable for the next procedure; 5, performing wind heat seal on the cooled base material and the first layer of melting glue; 6, performing wind heat seal on the first layer of melting glue and the second layer of melting glue; and 7, performing finishing by welding side ends. According to the making process, the shrinkage rate of the heat-shrinking belt is effectively controlled, the production efficiency is greatly improved, and the market prospect is wide.

Description

technical field [0001] The invention relates to a manufacturing process of a plastic product, in particular to a manufacturing process flow of a heat-sealing heat-shrinkable sleeve. Background technique [0002] In the mid-to-late 1990s, the oil and gas industry began to apply heat shrinkable products, and later expanded to urban gas pipelines, water pipelines and other fields. At present, the equipment for producing heat-shrinkable tapes is relatively backward in technology, which affects the production of heat-shrinkable products and seriously restricts the development of the industry. In the existing technology, when producing heat shrinkable sleeves, it relies on stretching when producing PE substrates, and glues them after radiation irradiation to become heat shrinkable products. However, due to the low level of automation, it is impossible to form an accurate control of the shrinkage rate, which is about 20- Within 30%, the shrinkage is unstable, resulting in slow con...

AI Technical Summary

Problems solved by technology

At present, the equipment for producing heat-shrinkable tapes is relatively backward in technology, which affects the production of heat-shrinkable products and seriously restricts the development of the industry.

In the existing technology, when producing heat shrinkable sleeves, it relies on stretching when producing PE substrates, and glues them after radiation irradiation to become heat shrinkable products. However, due to the low level of automation, it is impossible to form an accurate control of the shrinkage rate, which is about 20- Within 30%, the shrinkage is unstable, resulting in slow construction, time-consuming, energy-consuming, poor quality and reliability of coating, and affecting the quality of the project