Knowledge of carton packaging: What is Box Maker's Certificate

The Box Maker's Certificate (also named as box manufacturer certificate) is a stamp or label commonly found on corrugated boxes that provides important information about the box's construction and strength. The certificate indicates that the box conforms to certain standards set by organizations such as the International Safe Transit Association (ISTA) or the American Society for Testing and Materials (ASTM). The BMC is particularly relevant for shipping and packaging industries where the integrity of a box during transit is critical.

 

The BMC is a quality assurance mark that proves that the various physical properties of the current carton meet or exceed the index stated on the quality assurance seal. Its function is to illustrate The current cartons meet the transportation requirements and are suitable for transportation.

 

Strictly speaking, the carton quality assurance seal is only a stipulation on the physical properties of the carton, not the entire quality. For example, it does not include printing graphics and text effects, size specifications, waterproof and moisture-proof properties, etc.

 

 

The Box Maker's Certificate includes the following information:

 

Box Manufacturer: This identifies the company that produced the box. It may include the manufacturer's name, logo, or a specific code that can be traced back to the company. This information is crucial for accountability and quality assurance purposes.

 

Board Construction: This describes the type of corrugated board used to make the box. It indicates the flute size (e.g., A, B, C, E, or F flutes) and the number of walls (single-wall, double-wall, or triple-wall). Flute size affects the box's stacking strength and insulation properties, while the number of walls impacts the overall durability and protective qualities of the box.

 

Bursting Test: Also known as the Mullen Test, this is a measure of the box's resistance to rupture under pressure. The result is expressed in pounds per square inch (psi). A higher bursting test value indicates a stronger box that can withstand more internal or external force without failing.

 

Minimum Combined Weight Facings: This refers to the combined weight of the linerboard materials used on the inner and outer facings of the corrugated board. It is measured in pounds per thousand square feet (MSF). This weight influences the box's puncture resistance and overall strength.

 

Size Limit: This specifies the maximum external dimensions a box can have (length, width, and depth) to maintain its certification. It ensures that the box's size is appropriate for the strength characteristics indicated on the BMC.

 

Gross Weight Limit: This is the maximum weight the box is certified to hold and transport safely. It is an important consideration for shippers to prevent overloading and potential box failure.

 

City & State: This indicates the location of the manufacturing facility where the box was produced. This can be relevant for tracing the source of the boxes and for logistical considerations.

 

Parameter standards of the BMC

 

Single-wall corrugated fiberboard boxes

Gross Wt.Lt(Lbs)	Size Limit (in)	Min comb wt Facings Lbs/M sq.ft(g/m2)	Bursting Test(Lbs/sq.In)	ECT(Lbs/In)
20	40	52(254)	125	23
35	50	66(322)	150	26
50	60	75(366)	175	29
65	75	84(410)	200	32
80	85	111(542)	250	40
95	95	138(674)	275	44
120	105	180(879)	350	55

 

 

 

 

 

 

 

 

Double-wall corrugated fiberboard boxes

Gross Wt.Lt(Lbs)	Size Limit (in)	Min comb wt Facings Lbs/M sq.ft(g/m2)	Bursting Test(Lbs/sq.In)	ECT(Lbs/In)
80	85	92(449)	200	42
100	95	110(537)	275	48
120	105	126(615)	350	51
140	110	180(879)	400	61
160	115	222(1084)	500	71
180	120	270(1318)	600	82

 

 

 

 

 

 

 

Triple-wall corrugated fiberboard boxes

Gross Wt.Lt(Lbs)	Size Limit (in)	Min comb wt Facings Lbs/M sq.ft(g/m2)	Bursting Test(Lbs/sq.In)	ECT(Lbs/In)
240	110	168(820)	700	67
260	115	222(1084)	900	80
280	120	264(1289)	1100	90
300	125	360(1758)	1300	112

 

 

 

 

 

 

 

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