EASILY ADHERENT POLYPROPYLENE FILM

• Main Authors: KAWAMURA MASAJI, YOSHII TOSHIYA
• Format: Patent
• Language: English
• Published: 09.02.1983
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; MAKING GRANULES OR PREFORMS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PREPARATION OR PRETREATMENT OF THE MATERIAL TO BESHAPED; PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIALCONTAINING PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

PURPOSE:To produce the polypropylene film having superior adhesion, slipperiness, transparency, luster and antistatic property and suitable for preparation of sacks wherein the outer layer of the film has the atomic constitution-ratio of O/C and N/C respectively in a specified range. CONSTITUTION:In this good adhesive PP film, atomic constitution-ratio (ratio of number of atoms) on the surface layer of at least one side of a film is specified such that O/C is in the range of 0.15-0.35 and N/C is in the range of 0.005- 0.08. By such atomic constitution-ratio, (A) it is well adhesive and suitable for making a seak by adhesion, (B) it has good workability on account of sufficient slipperiness, (C) it has good workability due to its superior antistatic property, and (D) the apparance of the box may be finished finely by its transparency and its luster, when the sack is made by adhesion. Owing to said superior properties, it is utilized for print laminate, packaging material with the print made on the film itself, the base material for adhesion tape and so on, besides it is suitable for the sack-adhesion.