Surface mount component carrier tape upper cover tape and processing method thereof

Abstract

The invention discloses a surface mouth component carrier tape upper cover tape which comprises a PET thin film, wherein a hot melt adhesive layer formed by a hot melt adhesive is coated on the lower surface of the PET thin film, two parallel longitudinal die lines are formed on the hot melt adhesive layer, and die lines which are shaped like an inverted V are formed on the left side and the right side of the two longitudinal die lines. When the surface mouth component carrier tape upper cover tape is used, a client can obtain stable stripping force by only needing to tear apart in the direction of the inverted V along the positions of the die lines after joint, the strength of the stripping force can be determined by the size of a small-diameter cutting knife and different depths formed by cutting, and the upper cover tape of the left and the right die lines still leave on a lower tape, thereby avoiding the problem of leading the stripping strength of the cover tape to change; furthermore, the upper cover tape can save raw materials and save processing cost; and the processing method can be completed once and the processing method is simple.

Description

technical field [0001] The invention relates to a patch component carrier tape, in particular to an upper cover tape used for a patch component carrier tape and a processing method thereof. Background technique [0002] The traditional heat-sealable top cover tape is composed of PET and expensive adhesive layer. Its structure is PET film + interface layer + adhesive layer, but because the adhesive layer cannot meet the sealing conditions of all lower tapes, Therefore, the peel strength varies greatly, which may easily cause the parts to jump or tear or the bonding effect does not meet the requirements, which will cause inconvenience to the follow-up work of the SMT plug-in factory. [0003] Another is the traditional self-adhesive cover tape. This self-adhesive cover tape is made of a layer of PET film first coated with adhesive, then cut into the width specified by the customer by a slitting machine. After cutting, use a narrower slit PET film to stick together, leaving th...

AI Technical Summary

Problems solved by technology

[0002] The traditional heat-sealable top cover tape is composed of PET and expensive adhesive layer. Its structure is PET film + interface layer + adhesive layer, but because the adhesive layer cannot meet the sealing conditions of all lower tapes, Therefore, the peel strength varies greatly, which may easily cause the parts to jump or tear or the bonding effect does not meet the requirements, which will cause inconvenience to the follow-up work of the SMT plug-in factory.

[0003] Another is the traditional self-adhesive cover tape. This self-adhesive cover tape is made of a layer of PET film first coated with adhesive, then cut into the width specified by the customer by a slitting machine. After cutting, use a narrower slit PET film to stick together, leaving the left and right adhesive strips to become a self-adhesive cover tape. The peel strength of this cover tape has little change, but this cover tape is due to the manufacturing process. The process is complicated, and the selection of glue is not easy, resulting in the manufacturing cost more than twice that of the heat-sealed cover tape, which is not easy for customers to accept

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