Shenhua Printing Material Knife Plate Spring Pad: Foam Tape Die-cutting Special Anti-Adhesion and Anti-Compression Scheme

Foam tape (such as EVA foam tape, PE foam tape) is widely used in packaging fixation, electronic component bonding, cultural and creative pasting, etc. Its core problem is that the foam is prone to being compressed, the adhesive of the tape is strong and easily adheres to the spring pad, and during die-cutting, edge burrs, foam layering, and residual adhesive attachment problems may occur. The conventional spring pad has uneven hardness and insufficient anti-adhesion performance, making it difficult to meet the flexible die-cutting requirements of foam tape. Deephua Printing Materials focuses on the die-cutting pain points of foam tape and creates a dedicated knife plate spring pad. Through dual designs of anti-adhesion and anti-compression, it achieves efficient and precise die-cutting of foam tape.

In terms of material optimization, it uses ultra-soft and low-friction anti-adhesion composite materials, with the basic hardness controlled at Shore A 35-40, which has excellent flexibility and rebound performance, can fully adhere to the surface of foam tape, avoiding excessive die-cutting pressure that causes foam tape to be compressed or layered; the surface adopts special anti-adhesion coating, combined with nano polishing technology, the friction coefficient is reduced to below 0.04, completely solving the problem of adhesive attachment to the spring pad and avoiding residual adhesive attachment on the surface of the spring pad, reducing the frequency of cleaning. The toughness of the material is optimized, and anti-tearing components are added to avoid edge burrs on the spring pad from scratching the foam tape, ensuring a neat edge.

In terms of structure and process compatibility, it adopts a "flexible adhesion + balanced rebound" double-layer structure, with the surface adhering to the foam, and the bottom layer providing stable support, which can both prevent compression and ensure thorough die-cutting; it launches multiple thickness specifications of 0.8-1.5mm, with thickness error controlled within ±0.02mm, suitable for the die-cutting requirements of different thickness foam tape (0.5-1.2mm); it adopts seven-axis precision cutting technology, with no burrs or warping edges on the edge of the spring pad, and precise adhesion to the knife plate, eliminating the problems of missed cutting and excessive cutting. In response to the characteristic of foam tape easily rebounding and lifting waste materials, micro-drainage patterns are added on the surface to guide the waste material to quickly detach. After applying this solution, the adhesive attachment rate of foam tape die-cutting from an 10% rate dropped to 0.1%, the compression and scrap rate dropped to 0.2%, production efficiency increased by 30%, and fully met the die-cutting requirements of bonding-type foam tape.