TWI342264B - - Google Patents

Description

1342264 V. INSTRUCTION DESCRIPTION OF THE INVENTION (1) Technical Field of the Invention The present invention relates to a carrier tape substrate and a carrier tape used when loading an electronic component. In detail, the electronic component to be loaded is not corroded. The substrate of the belt and the carrier tape. [Prior Art], s In recent years, various electronic devices have been manufactured using various techniques for automatically mounting various electronic components to a circuit board. Among them, the technology of directly mounting various surface mount components on the surface of the board has made significant progress in the surface mount board technology of the stomach. A carrier tape formed of a carrier tape substrate is generally used in such surface mounting. The processing of the carrier tape substrate, for example, forming a cavity portion for mounting the surface mount component, etc., not only housing the surface mount component in the cavity portion but also heat-sealing the adhesive tape on the surface of the carrier substrate is supplied as Carrier tape is used. τ The carrier tape substrates are roughly classified into two categories. One type is a base material in which a plastic raw material is a main component, and the other type is a main material of a pulp fiber such as paper. Α There is a table to be filled. However, the pulp fiber is a main component of the substrate, and the electronic components such as the surface mount component are corroded. SUMMARY OF THE INVENTION Accordingly, it is a primary object of the present invention to provide a carrier tape substrate which is a surface component of a slurry material which is not corroded and deteriorated as an electronic component of a loaded breakage module. The main inventors of the present invention have found that the aluminum sulfate in the carrier substrate is used as the sulfate ion in order to solve the above problems.

2107-6207-PF(N2).ptd Page 5

1342264 V. INSTRUCTIONS (2) The component is corroded by the residual sulfate ion. That is, in general, in order to increase the strength of the inter-sheet strength carrier tape, a large amount of the paper strength enhancer is added, but in order to effectively leave the paper strength enhancer in the paper layer, the effect of the paper strength enhancer is exhibited, and the pH of the pulp must be about 5 In order to adjust the pH, aluminum sulfate is used. Further, it has been found that the present invention has been completed based on the findings that the use of such aluminum sulfate retains sulfate ions in the carrier tape as the final product. That is, the present invention which solves the above-mentioned problems is a carrier substrate having a multi-layered multi-layered structure, and each layer has a pulp material as a main component, and the surface p Η is 6. 0 - 8. 0, residual sulfuric acid A carrier tape substrate characterized by an ion amount of less than 500 ppm. 0重量份。 By weight of the paper strength enhancer 1. 0 - 8 . 0 parts by weight with respect to the pulp raw material. 0重量份。 In the case of the addition of a paper strength enhancer, the layer of each of the above-mentioned layers, preferably with respect to 100 parts by weight of the pulp raw material, with a polyethylene oxide as a main component of the tackifier 0.1 to 1.0 parts by weight. Further, in the case where a paper strength enhancer is added, it is preferable to adjust the moisture content of the wet paper to be extruded to 75 to 80% by weight. In addition, carrier tapes using these carrier tape substrates are also included in the present invention. The carrier tape substrate of the present invention is a substrate having a pulp material as a main component according to the surface pH and residual sulfur acid ion amount as described above, and is also a substrate which can prevent corrosion of the surface mount component to be filled. [Embodiment] [Detailed Description of the Invention] Hereinafter, the present invention will be described in more detail. The carrier tape substrate of the present invention has a multilayered multi-ply structure having a plurality of layers. Here,

2107-6207-PF(N2).ptd Page 6 1342264 V. INSTRUCTIONS (3) _ The multilayer is preferably composed of at least a surface layer and three layers. In the present invention, as the slab layer, the slabs of the slabs of the slabs of the slabs of the slabs of the slabs of the slabs of the slabs Tree, 钕 semi-chemical, paper t (SCP), priests, raw salt pulp (κρ),

), wood chips, wood pulp (RGP), and water. (CGP. (liver), etc., which uses 8±tin v „yy water (DIP), waste paper pulp. But from For the case where the above-mentioned types of surface mount components are mixed less, it is best to use the helmet to consider the use of filler paper pulp. /Wood & paper poly, not DIP or WP, etc. And the intermediate layer forming carrier tape can use different paper forgings: for forming;:: paper two raw materials are formed, and the desired effect is also obtained, and the preferred surface level is: the sulfonium salt method paper obtained by obtaining the raw material of the invention ( Κρ) 曰^ Use conifers and broadleaf trees as raw materials for the furnace, use the conifers in the middle layer of the soil, and use the conifers on the soil; =: paper (κρ) or deinked paper (9).

<The shovel of the shovel structure is a mixture of J strongeners and the like, which can be passed through a lid: it is made by using a pulp material and a paper strength structure. Head h. ·Weaving into various layers of wet paper and copying more than a ruthenium can use the round net multi-bank Park Yu, Gutu, the machine 'Bell help s heart. My machine A speed forming multi-layer paper machine how many have this曰b Ganshi machine and so on. In the case of multi-layer papermaking, the principle of each layer is formed; the principle refers to the method of copying the paper machine metal net in order to estimate the order of p to the drum. Each layer of each layer of the multi-layer layer is used to increase the layer 1342264 between the layers. 5. The strength between the layers of the invention is 1.0-8.0 parts by weight, preferably 0.5-6.0 parts by weight, based on the pulp material. Parts by weight. The interlayer strength can be further increased by setting the paper strength enhancer to 1.0 part by weight or more. On the other hand, when it is more than 8.0 parts by weight, it is not preferable to further improve the interlayer strength, and it is not preferable because of the adhesion of the stain on the paper machine equipment, and the occurrence of an increase in the pollutants in the drainage. As the paper strength enhancer, a compound such as an anionic polyacrylamide, a cationic polyacrylamide, an amphoteric polyacrylamide, a polyvinyl alcohol, a starch or a kaiming resin, or a commercially available product can be used.至8。 The preferred range of the surface of the carrier substrate having a pH of 6.0-8.0 ° pH is 6. 3-7, 8. Further, in the present invention, the specific residual sulfate ion amount is less than 50,000 p p m. The optimum range of residual sulfate ion is less than 250 ppm. When the pH of the surface of the carrier tape substrate becomes less than 6.0, and/or the amount of residual acid ions becomes 500 ppm or more, the surface mount product is corroded. When p Η and residual sulfate ions are in the above range, the pH of the raw material may be adjusted, or the amount of aluminum sulfate may be inhibited, or an organic compound such as sodium hydrogencarbonate, carbonic acid or ammonia may be added as appropriate. Further, in the case where the carrier tape substrate of the present invention thus constituted is a carrier tape, it is a substrate on which the surface mount component to be mounted is not corroded and deteriorated. 1 - In addition, the adhesive agent is added to the pulp material as a main component of the pulp material 0. 1 - 1.0 parts by weight, preferably 0. 2 - 0 . 5 parts by weight. Further, it is preferable to adjust the moisture content of the wet paper to be extruded to 75-80%, preferably 76-80%, more preferably 78-79.5%. The inventors have found that the wet paper formed by each layer is wet immediately before the extruded portion

2107-6207-PF(N2).pid Page 8 1342264 Five inventions description (5) Ϊ Ϊ ί (ie, the dehydration speed before pressurization) 'The formation of wet paper and the effect of paper = strong agent Great impact. In the case where the two-axis direction of the wet paper moves too fast, that is, when the moisture content is low, it is easy to form uneven uniformity and the moisture moves too slowly, that is, when the moisture content is too high, the extruded portion must be fruitful, I Dehydration, the result of uniform destruction, is the opposite of these two cases, but in any case, the paper strength enhancer is less effective, and as a result, the strength between the paper layers in the auxiliary direction of the soil is reduced. As a result, peeling occurs between the paper layers during the loading of the carrier tape or during transportation, and the problem of the loaded electronic components occurs. This problem is especially the largest quality defect during the aforementioned tape processing. Outside the human body, the unevenness of the formation or the occurrence of the texture of the damaged field i: the deviation of the degree of increase is increased as a result of the cutting of the carrier tape substrate and the winding of the mesh through each other, resulting in a bite The hole with the operability is significantly reduced = ^ If the width of the product is = 8_, the mold is made to cut the width of the above product, generally using paper:::: pieces.运卷-Second cut into a wide 丨 quot 中等 中等 的 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等 中等It is a processing form of 2 〇裘 amp 妯 妯 战 战 战 ( ( ( ( ( ( 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带 磁带;= top ^ remove the electronic components on the left for surface mounting. Compared with the method of winding the tape in the middle of the tape, it is possible to make the volume I, 4 of each roll lightly connected with the tape, and the electronic components are loaded: = and =

Page 9 m 2l07-6207-PF(N2).Ptd 1342264 V. Inventive Note (6) _: Advantages, in recent years: use this method more. However, the thickness of US and Erli forms a multi-layered structure; when 5% is cut, the volume is cut into a medium volume, and the double is 1 in the process of processing. The problem of mutual engagement. The guide of such a problem causes the efficiency of the village to be significantly reduced, making the actual operation difficult.聚 乍 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸 纸When the average sentence is unfolded, it can be =: the result of good uniformity is also improved when the paper strength enhancer is used to make the paper material. The above-mentioned solubilizer is added. Therefore, as a thickener which is mainly composed of polyethylene oxide, For example, it can be made by Mingcheng Chemical Industry Co., Ltd., the name of the mouth is alk〇x; it is made by the company, and the product name is PEO-PFZ. The best match of the tackifier is 8 The type is different depending on the degree of concentration, and the other is different, and the degree of the above-mentioned range is high. Even if the condition is high, the effect of adding the above-mentioned scumming agent and the moisture of the wet paper are made. The ratio is the above-mentioned range, and the raw material paper is not foamed and the hook of the sentence is uniform [the paper can be fully utilized. In addition, when the above-mentioned thickener is added in excess of the above range, the uniformity is changed. There are # strike, υ闽砰 'Although on °, but because there is another way to make raw pulp from & @ When the paper surface defects and poor. I packet role 'in the case of a cylinder paper machine' by appropriately adjusting cylinder slot aperture

Page 10 1342264

V. INSTRUCTIONS (7) The diameter of the ship, the change of the round net, the groove, and the straight value of the suction can make the moisture content of the wet paper to be replaced in the above range. Further, as a criterion for the degree of sentence adjustment described above, it is preferable that the weight variation coefficient CV of the paper determined by the following formula (1) is less than 1.25%, CV (%) = SD/Ave X 1 00 (" In f, SD is taken as wide (transverse) 8_χ length (longitudinal) i2〇c_ carrier substrate, and punched sequentially using a hole puncher with an inner diameter of 6 to make the interval between adjacent centers The standard deviation of the measured weight value when the weight of one small piece of sample is measured by an electronic balance that can be measured to 4 digits (0.1) below the decimal point. Ave is the average value of the aforementioned measured weight values. Further, in each layer of the carrier tape substrate of the present invention, various additives may be added to the extent that the desired effects of the present invention are not impaired. Specifically, when the carrier tape of the invention is the above three-layer structure, the surface layer, the back layer, f any - [all can use retention enhancers, colorants, defoamers, especially 'to prevent the fluff to improve the dimensional accuracy, you can add hot melt material' and then form the secondary processing of the molding equipment, ie, from And the top sealed package (the latter is said to be dead and stop) The formation of fluff or fiber powder occurs in the same shape. Or dust (slurry fiber powder) or seeks to melt the material. Thus, through the force of the cavity, etc. and the use of various other force port storage part of the surface Mounting assembly, and re-peeling 'enhancement by the bond between the hot melt fibers, thereby suppressing the well-preserved portion

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1342264 V. Description of the invention (9) As a type of hot-melt material, for example, it can be obtained from SWP (polyolefin synthetic slurry (manufactured by Mitsui Chemicals, Inc.), core-shell type polyester-based binder, core-shell type polymerization A propylene binder, a polyamide binder, and one or more of them are appropriately selected from PVA, etc. When the carrier substrate is used as a perforated carrier tape, it is preferable to contain a hot melt material 5 - 50. When the mixing ratio of the hot-melted fibers is less than 5% by weight, there is almost no effect of suppressing fluff or dust. When the content exceeds 50% by weight, the carrier substrate loses hardness, and the cavities such as the mold are difficult to be processed, and the perforation fails or There is a high possibility of forming a deformation cavity portion or the like, and it is also disadvantageous in terms of manufacturing cost. When the carrier tape substrate is used as an embossed carrier tape, it is preferable to contain a hot-melt substance of 10 to 50% by weight. When the weight % is used, there is almost no effect on the thermoplasticity and the shape retaining effect. When the amount is more than 50% by weight, the carrier substrate loses hardness and is likely to form a deformed cavity portion, which is also disadvantageous in terms of production cost. In the case of a carrier substrate having three or more layers of a layer, an intermediate layer and a back layer, the ratio of the hot-melt material is preferably such that the surface layer and the back layer paper and the intermediate layer are high, and the surface layer and the back layer are preferably 0. -50% by weight, the intermediate layer is 5 - 50% by weight. Therefore, in the final drying treatment, the adhesion of the hot molten material to the surface of the roll can be alleviated. However, generally, since the price of the hot melt material is higher than that of the pulp, a large amount When a hot melt material is used, the effect of preventing fluff or dust is high, but it is not economical. Therefore, in order to reduce the amount of the hot melt material used, it is preferable to add a binder component to the raw material. As the binder component, papermaking or the like can be used. Medium

2107-6207-PF(N2).ptd Page 13 V. INSTRUCTIONS (w) ______________ The pointing agent used. For example, alcohol, kaiming resin, polyacrylamide, starch, and polyethylene ratio are preferred as relative hydrating agents. However, in this case, the inside of the binder is added I. Parts by weight. 'In the case of 10 parts by weight of the raw material, in terms of the active ingredient, it is insufficiently hot-melt material and complex, and the fiber according to the addition ratio ^: is made by point bonding to form the internal structure (rigidity), and the sticky ": t tape substrate The softness] has no hardness. The internal structure is based on; f = tends to be hard with other fibers by surface bonding. j σ t has a carrier tape substrate that loses flexibility and becomes especially additive. When the part is 'formed in the mold 2, in the summer according to the active ingredient, more than 0 parts by weight' will not add more than the shoe-forming agent. Adding the heat-diffusing substance C dust. Machine, hot air dryer, workmanship The yoke yoke is dried and dried, so that the fused black "乂" ι paper of the hot melt material is melted sufficiently. The temperature above is illusory. Hereinafter, the carrier substrate of the present invention will be described in detail with reference to the accompanying drawings, and FIG. 2 is a plan view showing the carrier substrate of the present invention. Μϊ * _ 11 Figure 11-11-11 cross-section. An example of a belt The carrier substrate of the chart is not 0. It is a belt of the three-layer structure of the surface layer. Further, e 1 , intermediate layer, surface layer] and back 2107-6207~PF(N2).ptd ^ Λ Α -ττ Ϊ342264 5. Inventive description οι) The surface of the surface layer 13 is coated with a coating tape which will be described later. 20 0 used binder 1 6. Further, as shown in Figs. 2 and 3, the binder 16 is applied only to the portion to which the covering tape is attached. The total thickness of the carrier tape substrate 10 varies depending on the size of the electronic component to be mounted, preferably 300-1200 "m", more preferably 400-1000 //m. In addition, the weight per unit area is preferably 250-900 g. More preferably, the thickness of the surface layer 1 1 and the back layer 13 is 50-250 //m ', preferably 100-200, respectively, and the weight per unit area is 50-200 g/m 2 . It is preferably from 40 to 200 g/m2, more preferably from 80 to 160 g/m2. Further, as the binder to be used at this time, usually the carrier tape is a dry carrier substrate and a coating. The adhesive used in the time is used without any particular limitation.

Further, the carrier tape substrate 1 of the present embodiment is used as the carrier tape 1 of the present invention as shown in Figs. 2 and 3 . That is, as shown in Fig. 2, the carrier tape substrate 1 is provided with a circular opening at a predetermined interval on the edge of the side edge, and a plurality of edge portions 1 4' are formed at the edges of the other side. A plurality of cavity portions 15 are formed. V and 'the carrier tape 1 thus formed, when used, as shown in Figs. 2 and 3, respectively, accommodates the surface mount assembly 3 在 in the mold portion 15 5 (thus, the size of the cavity 15) due to the accommodating surface mounting assembly 3 〇 'so it is best to choose the necessary and sufficient size) 'additional coverage on the carrier substrate 1 覆盖 over the cavity portion 15 . Further, as shown in Fig. 3, after the cover tape 20 is peeled off and the surface mount unit 30 is exposed, it is not particularly shown, but the surface mount unit is loaded at a set position of a desired product. As a cover tape 2 〇, usually in this

1342264

In the carrier tape, the "invention" of the present invention is constituted by the cavity portion 15 as long as it does not deviate from the present invention (the hole type carrier tape, and the concave hole structure of the figure (the embossed tape storage surface mounting component is below, The invention is not limited by these limitations, and the examples and ratios are formed in the case of "part" and the coated tape. In addition, "%" hour _ ruler can be used without the above-mentioned purpose, can be used for the type of punching process, or it can be the pre-molding part (no hole is more detailed than the following) The examples are respectively indicated by the use of "limited". Any restrictions on the implementation of the scheme. #Formed through holes are formed by embossing to perform cutting processing on the hole carrier belt). The present invention is described, but as long as there is no special weight portion " &"weight [Examples] (Example 1) In the top and back layers, the conifer bleached kraft pulp (NBKP) 50%, broadleaf tree is used. Bleached Kraft Wood Pulp (LMp) 5〇% pulp slurry is adjusted to Canadian Standard Freeness (CSF) 45〇cc slurry intermediate layer using NBKp25%, LBKP25%, food packaging waste paper slurry 50% The pulp slurry was adjusted to a slurry of CSF 35 〇 cc. In addition, 'in the above-mentioned respective layer-forming substrates, 'with respect to the pulp raw material', an anionic polyacrylamide paper strength enhancer (trade name: HARMIDE B-15, HARIMA CHEMICALS, INC.) 5 parts of 'tackifier (trade name: ALKOX SR, manufactured by Mingcheng Chemical Industry Co., Ltd.) 0,4 parts. Furthermore, no aluminum sulfate is added. Using the above-mentioned combined use of a rotary net multi-layer paper machine, a three-layer structure is obtained.

1342264 V. INSTRUCTIONS (13) Carrier tape substrate. At this time, the wet paper moisture content of the portion to be weaved is 7.6 %. The surface ρ Η of the obtained carrier substrate is 6.4. Further, the residual sulfate ion amount of the carrier tape substrate was measured by the following method, and the interlayer strength, the uniformity, the singularity of the electronic component, and the operability at the time of production were evaluated. (Test method) • Residual amount of sulfate ion: The sulfate ion in the carrier substrate was extracted with hot water. The precipitate was precipitated by vaporization, and the weight of the sink was measured to calculate the amount of residual sulfate. • Peel strength: Test method as described in TAPP IUM522. • Electronic component corrosion test: Cut the 5 〇g carrier tape substrate into 1 cm square pieces 'mixed with 50 wafer electronic components into the weighing bottle and place at 40 ° C '80% (relative humidity) 3 days. Then, it was taken out from the weighing bottle. The wafer electronic components were observed one by one with a microscope, and the number of components that corroded was counted. • Operationality: In the case of no paperwork during the papermaking process or processing, record the operation points. (Example 2 - Example 5) A carrier tape substrate was produced in the same manner as in Example 1 except that the blending amount of the paper strength enhancer or the tackifier was changed, or the wet paper moisture content of the pressed portion was changed. experimenting. (Comparative Example 1) A substrate for forming a surface layer and a back layer was prepared in the same manner as in Example 1 except that 3 parts of sulfuric acid were used in any of the layers.

2107-6207-PF(N2).pLd Page 17 1342264 V. INSTRUCTIONS (4) Conduct the test. The pH at this time is 5 _ 0, and the moisture content of the wet paper at the extruded portion is 7 6.5%. (Comparative Example 2) A test was carried out in the same manner as in the Example except that ρ Η on the surface of the carrier substrate was adjusted to 8.2. The wet paper moisture content of the portion to be squeezed is 7 6.5%. (Comparative Example 3) The carrier amount of the paper reinforcing agent was 5%, and the wet paper moisture content of the extruded portion was 76.7%. The test was carried out in the same manner. 7%。 The moisture content of the wet paper is 76.7%. Soil (Comparative Example 4) In addition to the suspension of the addition of the humectant, the 丨 Kun ¥ 八 七. And the pH is 6.3, that is, the extruded portion (the same is the same as the above-mentioned example). The moisture content of the wet paper of Comparative Example 5) was 76.4%. In addition to the adjustment of the working conditions of the metal mesh adjacent device, the vacuum suction of the deintercalation was 74.0%, and the moisture content of the wet paper with the implementation = part was The test was carried out. At this time, ρ Η was 6 4 7 1 as the carrier tape substrate, and the same (Comparative Example 6), except that the metal mesh device was stopped, the dehydration was delayed, that is, the vacuum suction between the extrusion portions and the extrusion portion was performed. In the same manner as in Example 1, the moisture content of the yam paper of the knife was 8 〇, and 5% was carried out in the same manner as the carrier substrate.

2107-6207-PF(N2).ptd 1342264 V. Description of invention (15) '~---- Test. The substrate was prepared in the same manner as in Example 1 except that the amount of the tackifier was 1. 2 parts. Similarly, the wet paper moisture content of the portion to be pressed is π. 1,. (Comparative Example 8) · . ° Others and the pH at the time of implementation is an example of the amount of the paper strength enhancer: the carrier tape base # is produced in the same manner, and the result of the wet moisture test of the "= two points is shown in the following example: Coordination with the comparative examples 1-8, manufacturing conditions and corrosion of the components: layer = papermaking process or processing;:: = r. In addition, good hook, problem. = Operation failure, can eliminate the previous components: i rot: the residual sulfate ion with the substrate is more than the result of the electronic substrate, #, paper machine problem. In Comparative Example 2, a carrier tape was produced. In Comparative Example 3, a large amount of dross was adhered to the surface layer to stabilize the interlayer peeling problem. The strength between the paper layers of the substrate was low. When the cutting process was performed, the unevenness of the material formation was unsuitable for the carrier substrate. The carrier tape base of Comparative Example 4 was wound to each other. Crossing: The strength between the layers is low' and the adjacent ones are uniform during the cutting process, and the strength between the paper layers is a problem. It is better than the case where the substrate of the carrier of the example 5 is not occluded. This degree, in addition to the adjacent winding during the cutting process, produces a pattern of mutual hooking. The carrier tape substrate of Example 6 is said to be damaged on the entire paper, and the strength between the paper layers is low and the cutting process phase

2107-6207-PF(N2).ptd Page 19 1342264 V. INSTRUCTIONS (16) The winding of the neighbors creates a problem of mutual engagement. In the carrier tape substrate of Comparative Example 7, a pattern called destruction uniformity was generated on the entire paper. The carrier tape substrate is difficult to adhere to the rib-like dirt on the paper machine metal mesh device. In the carrier tape substrate of Comparative Example 8, not only a large amount of dirt was adhered to the drying equipment and the metal mesh equipment at the time of copying, but also the pollutants in the drainage were increased, and the drainage treatment was difficult.

2107-6207-PF(N2).ptd Page 20 1342264 V. INSTRUCTIONS (17) Sub-electric filling is suitable for use. X (1): 苕镔 chain square r«lsat±^ltHSs^. Day P.X (2) : sillHHafts笤39|Yixiang speak SS>3-I]>3S菰-this #«跑尔 1S. Θ .X (3): Attacking the cone chain to listen to the 80 ports ± defeat the government to help the beads to bribe ssn ^ ifflt more than bleak. (5) X s .. ^1l^»S5WS— - . Send the box to 5151||. This. Ιι h 00 00 00 LA Φ Φ 0.5 parts <^y 7 5 (» SJ φ paper strength agent 04 parts 1.2 parts 0.4 parts 04® o Φ "_η ί〇.4{»| "_ [^ parts π 丨 0.2 parts 0-4© 0 -4 f» 0.4(分增轱_ Os On Os Uo 0\ Lo 〇\ 00 to Os Lo Os ▲ Ο OS Lo Os Original 枓PH 76.4 76.3 80.3 ' 74.0 76.4 76 7 76.5 76 5 76.0 76.4 76.8 76.5 Moisture rate ( %] SB 6 Oj σ σ> § ^_Λ Sulfate ion (ppm) 1.79 i 1.44 1.33 1.67 1.75 Ό 1 1.80 1 1.68 δ Peel strength (Mpa) 逋m Tip slightly slightly Schis m Motion with or without interlayer peeling ◎ XXXX ◎ ◎ 〇© © ◎ 均度- 〇ο o 〇OO ο Ο ο ο ο The number of electronic components is corroded. X ^—VXSX r~~\ to v_/ X s X /-V. to 〇X » —· ο ο 〇〇〇〇Operational and material»1 Baseband Jvev

2107-6207-PF(N2).ptd Page 21 1342264 BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side view showing an example of the structure of a carrier tape substrate of the present invention. Fig. 2 is a plan view showing an example of a carrier tape formed using the carrier tape substrate of the present invention. Fig. 3 is a cross-sectional view taken along line II-II of Fig. 2; [Description of Symbols] 1 1...surface layer, 1 3...back layer, 1 5...mold part, 2 0...coated tape. 10... Carrier tape substrate 1 2... intermediate layer, 1 4... edge portion, 1 6... pointing agent,

2107-6207-PF(N2).ptd Page 22

Claims (1)

1342264 Case No. 93106815 厶月>5曰Revised text f VI. Patent application scope 1. A carrier tape substrate, which has a multi-layered multi-layered structure, and each layer has a carrier substrate with respective pulp raw materials as a main component. The weight of the surface is 6.0-8.0, and the residual sulfate ion amount is less than 500 ppm. In each of the plurality of layers, the paper strength enhancer is added in an amount of 1.0 to 0.8 parts by weight, based on 100 parts by weight of the pulp raw material. Tackifier 0.1 to 1.0 part by weight. 2. The carrier tape substrate according to claim 1, wherein the tackifier comprises polycycloalkane as a main component. 3. The carrier tape substrate according to claim 1 or 2, wherein the moisture content of the wet paper to be extruded is adjusted to 75 to 80% by weight. A carrier tape using the carrier tape substrate as described in any one of claims 1 to 3. 2107-6207-PFl(N2).ptc Page 23