Abstract: A tape-shaped product and a belt for a ball chain are provided. A tape-shaped product of synthetic resin includes a tape of a thermoplastic resin, and a preliminarily stretched fibrous member of a thermoplastic resin contained therein along longitudinally parallel edges or in proximity thereto of the tape. A belt for a ball chain, includes a tape-shaped product of synthetic resin formed by injection molding, together with a fibrous member as an insert of a resin of the same kind as that of the fibrous member so that the fibrous member is disposed along the longitudinal edges or in proximity thereto, ball-insetting holes are disposed at equal intervals, and ball-retaining projections are disposed around the holes.

Abstract: A tape-shaped product and a belt for a ball chain are provided. A tape-shaped product of synthetic resin includes a tape of a thermoplastic resin, and a preliminarily stretched fibrous member of a thermoplastic resin contained therein along longitudinally parallel edges or in proximity thereto of the tape. A belt for a ball chain, includes a tape-shaped product of synthetic resin formed by injection molding, together with a fibrous member as an insert of a resin of the same kind as that of the fibrous member so that the fibrous member is disposed along the longitudinal edges or in proximity thereto, ball-insetting holes are disposed at equal intervals, and ball-retaining projections are disposed around the holes.

Abstract: A tape-shaped product and a belt for a ball chain are provided. A tape-shaped product of synthetic resin includes a tape of a thermoplastic resin, and a preliminarily stretched fibrous member of a thermoplastic resin contained therein along longitudinally parallel edges or in proximity thereto of the tape. A belt for a ball chain, includes a tape-shaped product of synthetic resin formed by injection molding, together with a fibrous member as an insert of a resin of the same kind as that of the fibrous member so that the fibrous member is disposed along the longitudinal edges or in proximity thereto, ball-insetting holes are disposed at equal intervals, and ball-retaining projections are disposed around the holes.

Abstract: A tape-shaped product and a belt for a ball chain are provided. A tape-shaped product of synthetic resin includes a tape of a thermoplastic resin, and a preliminarily stretched fibrous member of a thermoplastic resin contained therein along longitudinally parallel edges or in proximity thereto of the tape. A belt for a ball chain, includes a tape-shaped product of synthetic resin formed by injection molding, together with a fibrous member as an insert of a resin of the same kind as that of the fibrous member so that the fibrous member is disposed along the longitudinal edges or in proximity thereto, ball-insetting holes are disposed at equal intervals, and ball-retaining projections are disposed around the holes.

Abstract: A waterproof protector system comprises a body protector which stores a camera body, a first port member to be attached to the body protector, and a second port member to be attached to the first port member. The body protector is formed having a first opening portion. The first port member has a second opening portion to be fitted in the first opening portion, a third opening portion larger in diameter than the second opening portion, and a conical barrel portion formed between the second opening portion and the third opening portion. The first port member houses an accessory member, such as a wide-conversion lens. The second port member has a fourth opening portion, fittable in the third opening portion, and a light transmitting portion.

Abstract: A tape-shaped product and a belt for ball chain are provided. A tape-shaped product of synthetic resin including a tape of a thermoplastic resin, and a preliminarily stretched fibrous member of a thermoplastic resin contained therein along longitudinally parallel edges or in proximity thereto of the tape; and a belt for ball chain, including a tape-shaped product of synthetic resin formed by injection molding together with a fibrous member as an insert of a resin of the same kind as the fibrous member so that the fibrous member is disposed along the longitudinal edges or in proximity thereto, ball-insetting holes disposed at equal intervals, and ball-retaining projections disposed around the holes.

Abstract: A waterproof protector system comprises a body protector which stores a camera body, a first port member to be attached to the body protector, and a second port member to be attached to the first port member. The body protector is formed having a first opening portion. The first port member has a second opening portion to be fitted in the first opening portion, a third opening portion larger in diameter than the second opening portion, and a conical barrel portion formed between the second opening portion and the third opening portion. The first port member houses an accessory member, such as a wide-conversion lens. The second port member has a fourth opening portion, fittable in the third opening portion, and a light transmitting portion.

Abstract: A storage portion is provided in a body protector that has a waterproof space for storing a camera. A shoe cover that is removed from a hot shoe of the camera is put away into the storage portion. The storage portion is formed in a corner of the box-shaped waterproof space in the body protector. The shoe cover can be inserted into and removed from the storage portion in the optical axis direction of a camera lens.

Abstract: A vinylidene fluoride resin composition which is stable to heat at molding temperatures and is free from foaming and coloration, and molded products made by forming the vinylidene fluoride resin composition are provided. The vinylidene fluoride resin composition may comprise 100 parts by weight of a vinylidene fluoride homopolymer; 2-20 parts by weight of a polyester plasticizer; 0.01-0.5 parts by weight of a phosphite compound; and a phenol compound.

Abstract: A vinylidene fluoride resin composition which is stable to heat at molding temperatures and is free from foaming and coloration, and molded products made by forming the vinylidene fluoride resin composition are provided. The vinylidene fluoride resin composition may comprise 100 parts by weight of a vinylidene fluoride homopolymer; 2-20 parts by weight of a polyester plasticizer; 0.01-0.5 parts by weight of a phosphite compound; and a phenol compound.

Abstract: A vinylidene fluoride resin composition which is stable to heat at molding temperatures and is free from foaming and coloration, and molded products made by forming the vinylidene fluoride resin composition are provided. The vinylidene fluoride resin composition of the present invention comprises 100 parts by weight of a vinylidene fluoride resin, 2-20 parts by weight of a polyester plasticizer, 0.01-0.5 parts by weight of a phosphite compound. The vinylidene fluoride resin composition may further comprises a phenol compound.

Abstract: A leader for fly fishing which has a high knot strength and a high tensile tenacity, is free from the formation of a shape-unstable portion (constriction) having a smaller diameter than an average thread diameter of the tippet section and the occurrence of melt fracture at a connecting portion between the tapered section and the tippet section, and shows an excellent natural drift property, can be produced by using a vinylidene fluoride-based resin having an inherent viscosity of 1.0 to 1.7 dl/g.

Abstract: A monofilament prepared from a vinylidene fluoride resin and satisfying the following relationship between the elastic modulus at a tensile elongation of 15% (Y15) and the initial elastic modulus (Y0): 0.85.ltoreq.(Y15/Y0).ltoreq.1.3, and a Y15 value ranging from 200 to 350 kg/mm.sup.2 ; and a fishing line prepared from the monofilament and having a feature that undesirable curling is difficult to occur and, even when curling occurs, it can be readily relieved.

Abstract: Provided in the present invention are a leader for fly fishing comprising a monofilament of a vinylidene fluoride resin, said leader consisting of a butt section, a taper section and a tippet section, a diametral unevenness of the tippet section being less than 10%, and a process for producing such a leader for fly fishing. The leader for fly fishing according to the present invention has pliability to allow unrestricted movement of the fly and enough strength to withstand the impact of striking, and is also small in diametral unevenness and capable of having its curling disposition or kink easily straightened out.

Abstract: A vinylidene fluoride resin fiber have a diameter of not less than 0.5 mm, and satisfy the formulae (1) and (2):Ra.gtoreq.0.5 (1)Rb.gtoreq.(Ra+Rc)/3.0 (2)wherein Rc represents a ratio of absorbance at 765 cm.sup.-1 of .alpha.-type crystal to that at 843 cm.sup.-1 of .beta.-type crystal at the center point of a fiber cross-section, Rb represents a ratio of absorbance at 765 cm.sup.-1 of .alpha.-type crystal to that at 843 cm.sup.-1 of .beta.-type crystal at the point of r/3 from the center point thereof, and Ra represents a ratio of absorbance at 765 cm.sup.-1 of .alpha.-type crystal to that at 843 cm.sup.-1 of .beta.-type crystal at the point of 2r/3 from the center point thereof, wherein r is a radius of the fiber cross-section.

Abstract: Abrasive filaments made of a composition which comprises 95-70 vol.% of a polyvinylidene fluoride resin, whose inherent viscosity (.eta..sub.inh) ranges from 0.9 to 1.4, and 5-30 vol.% of abrasive grains. They are produced by melt-spinning the composition and then stretching the resultant filaments at a draw ratio of 2.5 times-5.5 times within a temperature range of 100-200.degree. C.

Abstract: Abrasive filaments made of a composition which comprises 95-70 vol. % of a polyvinylidene fluoride resin, whose inherent viscosity (.eta..sub.inh) ranges from 0.9 to 1.4, and 5-30 vol. % of abrasive grains. They are produced by melt-spinning the composition and then stretching the resultant filaments at a draw ratio of 2.5 times-5.5 times within a temperature range of 100.degree.-200.degree. C.

Abstract: A composite fiber comprises at least a two layer structure of a sheath and a core, each layer comprising a vinylidene fluoride resin, the core portion having an inherent viscosity of 1.10 dl/g and the sheath portion having an apparent viscosity lower than that of the core portion, said composite fiber having a birefringence of at least 36.0.times.10.sup.-3. This composite fiber, which has excellent knot strength (as high as 91 kg/mm.sup.2), high tensile strength (as high as 103 kg/mm.sup.2), excellent luster, and high processability and productivity, is produced by preparing a composite comprising a core portion of a vinylidene fluoride resin having an inherent viscosity of at least 1.