KR970010080A - Joining method and device of synthetic resin sheet connection - Google Patents

Abstract

The present invention relates to a joining fixing method and apparatus for joining by an ultrasonic processing method without bonding the interconnects of synthetic resin sheets used in manufacturing tents, awnings, tents, various covers, etc. by a bar. The method of sewing by material is possible, but the needle is penetrated into and out of the material during sewing, so the needle hole and seam left are left, so the appearance is not beautiful and the airtightness is not good. Although there are differences depending on the characteristics of the bar, there was a problem that the work efficiency is relatively low. To solve this problem, the polyethylene coating film is bonded to each other by thermal bonding, and the polypropylene woven fabric is partially bonded to each other by ultrasonic bonding. The thermal bonding and the ultrasonic wave The joining method and the lower die formed together with the joining are formed on the upper surface a plurality of projections for the partial joining to the same height, the linear projections for the linear joining between the plurality of partial projections to form a lower height than the partial projections, By providing a joining device formed by installing a heating mechanism on the inside or the bottom of the lower die, it is not necessary to perform the bar processing as in the prior art, the entire longitudinal joining by heat bonding is achieved to achieve a complete waterproof effect accordingly Efficiency can be greatly improved.

Description

Joining method and device of synthetic resin sheet connection

Since this is an open matter, no full text was included.

1 is an enlarged cross-sectional view of a synthetic resin sheet used in the present invention.

2 is a main structural diagram as an example of an apparatus for explaining the principle of the present invention.

3 is an enlarged cross-sectional view of the lower die in FIG. 2;

4 is an exemplary view showing another example as a plan view of a lower die in the present invention.

Figure 5 is an enlarged cross-sectional view for explaining the bonding process of the sheet connection of the synthetic resin using an example of the device of the present invention.

Claims (3)

In the bonding method in which a plurality of synthetic resin sheets having a polyethylene coating film formed on the outer side of a polypropylene woven fabric are laminated, the polyethylene coating films which are in contact with each other on the inside of the overlapped synthetic resin sheets are bonded to each other by thermal bonding, The inner polypropylene woven fabric is bonded to each other by the ultrasonic bonding, but the thermal bonding and ultrasonic bonding, characterized in that the bonding method made of a synthetic resin sheet connection. In a conventional ultrasonic bonding apparatus in which a plurality of synthetic resin sheets are bonded to each other by overlapping a portion to be bonded of a plurality of synthetic resin sheets as a material to be bonded between the upper and lower dies, and pressing the upper die. Synthetic resin, characterized in that formed on the upper surface of the lower die a plurality of partial projections for partial joining, between the plurality of partial projections to form a linear projection for linear joining, and a heating mechanism installed on the inner or lower portion of the lower die Joining device of the first sheet connection. 3. The bonding apparatus of a synthetic resin sheet connecting portion according to claim 2, wherein the plurality of partial protrusions are formed at the same height and the straight protrusions are formed at a lower height than the partial protrusions. ※ Note: The disclosure is based on the initial application.